Dual Fluorescence in Glutathione-Derived Carbon Dots Revisited

Yadolah Ganjkhanlou, J. J.Erik Maris, Joris Koek, Romy Riemersma, Bert M. Weckhuysen, Florian Meirer*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Dual-fluorescence carbon dots have great potential as nanosensors in life and materials sciences. Such carbon dots can be obtained via a solvothermal synthesis route with glutathione and formamide. In this work, we show that the dual-fluorescence emission of the synthesis products does not originate from a single carbon dot emitter, but rather from a mixture of physically separate compounds. We characterized the synthesis products with UV-vis, Raman, infrared, and fluorescence spectroscopy, and identified blue-emissive carbon dots and red-emissive porphyrin. We demonstrate an easy way to separate the two compounds without the need for time-consuming dialysis. Understanding the nature of the system, we can now steer the synthesis toward the desired product, which paves the way for a cheap and environmentally friendly synthesis route toward carbon dots, water-soluble porphyrin, and mixed systems.

Original languageEnglish
Pages (from-to)2720–2727
JournalJournal of Physical Chemistry C
Volume126
Issue number5
DOIs
Publication statusPublished - 10 Feb 2022

Bibliographical note

Funding Information:
This work was supported by Netherlands Organization for Scientific Research (NWO) VIDI Grant (no. 723.015.007) and The Netherlands Center for Multiscale Catalytic Energy Conversion (MCEC), an NWO Gravitation program funded by the Ministry of Education, Culture and Science of the government of The Netherlands.

Publisher Copyright:
© 2021 American Chemical Society.

Funding

This work was supported by Netherlands Organization for Scientific Research (NWO) VIDI Grant (no. 723.015.007) and The Netherlands Center for Multiscale Catalytic Energy Conversion (MCEC), an NWO Gravitation program funded by the Ministry of Education, Culture and Science of the government of The Netherlands.

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